| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 50.3 | 95 |
| 2015 | 50.299 | 95 |
| 2014 | 50.297 | 96 |
| 2013 | 50.295 | 99 |
| 2012 | 50.293 | 99 |
| 2011 | 50.292 | 101 |
| 2010 | 50.293 | 103 |
| 2009 | 50.296 | 103 |
| 2008 | 50.3 | 104 |
| 2007 | 50.305 | 103 |
| 2006 | 50.311 | 103 |
| 2005 | 50.318 | 103 |
| 2004 | 50.324 | 104 |
| 2003 | 50.33 | 103 |
| 2002 | 50.335 | 101 |
| 2001 | 50.338 | 101 |
| 2000 | 50.337 | 104 |
| 1999 | 50.333 | 105 |
| 1998 | 50.325 | 105 |
| 1997 | 50.314 | 108 |
| 1996 | 50.301 | 109 |
| 1995 | 50.287 | 110 |
| 1994 | 50.274 | 112 |
| 1993 | 50.26 | 112 |
| 1992 | 50.246 | 113 |
| 1991 | 50.233 | 114 |
| 1990 | 50.222 | 115 |
| 1989 | 50.213 | 114 |
| 1988 | 50.207 | 113 |
| 1987 | 50.203 | 113 |
| 1986 | 50.2 | 113 |